Path-length-resolved dynamic light scattering: Modeling the transition from single to diffusive scattering

Journal Article (Journal Article)

Dynamic light-scattering spectroscopy is used to study Brownian motion within highly scattering samples. The fluctuations of the light field that is backscattered by a suspension of polystyrene microspheres are measured as power spectra by use of low-coherence interferometry to obtain path-length resolution. The data are modeled as the sum of contributions to the detected light weighted by a Poisson probability for the number of events that each component has experienced. By analyzing the broadening of the power spectra as a function of the path length for various sizes of particles, we determine the contribution of multiple scattering to the detected signal as a function of scattering anisotropy. © 2001 Optical Society of America.

Full Text

Duke Authors

Cited Authors

  • Wax, A; Yang, C; Dasari, RR; Feld, MS

Published Date

  • August 20, 2001

Published In

Volume / Issue

  • 40 / 24

Start / End Page

  • 4222 - 4227

Electronic International Standard Serial Number (EISSN)

  • 2155-3165

International Standard Serial Number (ISSN)

  • 1559-128X

Digital Object Identifier (DOI)

  • 10.1364/AO.40.004222

Citation Source

  • Scopus